OC-0547: How to identify patient specific rectal sub-region likely responsible of rectal bleeding in prostatic IMRT?

Prostate IMRT: Two-dimensional model of rectal NTCP employing the variability of rectal motion and rectum wall thickness

Background: In order to improve the evaluation of possible rectal toxicity based on the rectal normal tissue complication probability (NTCP), we consider the fractional dependence of the NTCP on the wall thickness (tW) and rectal displacement (RM). Materials and Methods: The two-dimensional NTCP model (NTCP2D) was developed using radiotherapy plans of ten randomly selected patients with prostat...

Rectal bleeding due to rectal erosion of vaginal mesh

A 68-year-old female presented to our Colorectal Surgery clinic with a 2-month history of tenesmus and discharge of mucus and blood per rectum. Her past medical history included dilatation and curettage for menorrhagia, Caesarian section, hysterectomy and vaginal wall prolapse repair 20 years previously. On examination there was a palpable mass in the rectum. A colonoscopy was performed and rev...

Investigation of rectal bleeding.

Rectal bleeding and polyps.

Colorectal polyps are an important albeit uncommon cause of rectal bleeding in children. Colonoscopy promotes both rapid and accurate diagnosis and the opportunity for immediate therapeutic polypectomy. A 10 year audit of polyps diagnosed and treated endoscopically has been undertaken in the children's endoscopy unit. Twenty nine polyps were diagnosed from 730 colonoscopies; 24 were juvenile, t...

Diverticulitis and Rectal Bleeding

FRAENKEL (1954) has recently drawn attention to the massive bleeding which sometimes occurs as a primary symptom in cases of diverticulitis of the colon. He quotes Mr. D. C. Corry: "If a middle-aged or elderly patient, apparently in fair health, has a sudden, unexpected, and alarmingly profuse rectal haemorrhage of perhaps several pints, full examination is likely to reveal diverticulosis of th...